Fuel efficient valve control

Details Fuel efficient valve control Fuel efficient valve control

1998-06-01

1999-11-02

Wolfe, Willis R.

Internal-combustion engines

Spark ignition timing control

Electronic control

12340632, 123198F, 123 9015, F02P 900, F02D 1702

Patent

active

059750529

ABSTRACT:
A method for improving efficiency and reducing emissions of an internal combustion engine. Variable displacement engine capabilities are achieved by disabling engine valves during load changes and constant load operations. Active cylinders may be operated at minimum BSFC by intermittently disabling other cylinders to provide the desired net torque. Disabling is begun by early closing of the intake valve to provide a vacuum at BDC which will result in no net gas flow across the piston rings, and minimum loss of compression energy in the disabled cylinder; this saving in engine friction losses is significant with multiple disablements.

REFERENCES:
patent: 5398544 (1995-03-01), Lipinski et al.
patent: 5404844 (1995-04-01), Schechter
patent: 5408966 (1995-04-01), Lipinski et al.
patent: 5408974 (1995-04-01), Lipinski et al.
patent: 5529549 (1996-06-01), Moyer
patent: 5623906 (1997-04-01), Storhor
patent: 5636609 (1997-06-01), Fujiyoshi
patent: 5695430 (1997-12-01), Moyer
patent: 5826563 (1988-10-01), Patel et al.
patent: 5832885 (1988-11-01), Moyer

Affiliated with

Also associated with

Rating

Fuel efficient valve control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fuel efficient valve control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel efficient valve control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2122302